Method of weaving.



- A. T. QUANTZ.

METHOD OF WEAVING'.

APPLICATION FILED Aue.22.19|7.

1 6 6 1 2 Patented June 4, 1918.

'rn sra ns A METHOD OF WEAVING.

Speciflcationof Letters Patent. 1

Patented June 4, 1918.

Application filed August 22, 1917. Serial No. 187,634.

To all whom it may concern:

Be it known that I, ALBERT T. QUANTZ, a citizen of the United States,residing at Rock Hill, York county, State of South Carolina, haveinvented certain new and useful Improvements in Methods of Weaving, ofwhich the following is a specification.

This invention relates particularly to weaving cord fabrics and has forits object to provide a novel method whereby the fabric may be wovenmore economically than present methods allow, and'which enables a betterquality of fabric to be produced.

In the weaving of cord fabrics longitudinal stripes or ribs are formedtherein by using warp threads of different thicknesses, the body of thewarp being usually of single ply thread and the ribs of double plythread. Pattern forming devices, such as a stationary reed, or the dropbars, in looms where 'a drop bar stop motion is employed, arrange thewarp threads in patterns just before the warp enters the harness.

Due to the fact that the single ply warp threads wind sinuously over andunder the woof threads while the thicker doubleply warp threads, owingto their greater stiflness, do not, but lie substantially straight inthe cloth, it would seem that in weaving a given length 'of cloth thesingle 'ply warp threads supplied should be materially longer than thedouble ply warp threads supplied,

in order that the ends would match and waste be avoided.

In practice the single have been sized and rendered comparativelynon-elastic while the double ply threads have been left in theiroriginal unsized and elastic condition, the single ply threads beingwound upon a beam and the double ply threads being wound underconsiderabletension upon the same beam. The double ply threads arestretched in this Winding-on process so that their length in theirstretched condition is equal to the length of the nonelastic single plythreads.

In the process of weaving it is desired that the shortening of thesingle ply threads due to their sinuous winding over and under the woofthreads be approximately equal to the actual contraction of the doubleply threads, resulting in the producply warp, threads tion'of a smoothcloth and no waste due to the two kinds of thread running out atdifferent times.

Heretofore'two methods have been employed for supplying the differentwarp threads to the loom. In one method the single ply sized threads andthe double ply unsized threads have been wound in alternate layers onthe same beam, the double ply threads'being wound under tension, andboth varieties passing over the same whip beam when-being run off intothe loom.

Due, however, to the fact that the unsized threads must be wound uponthe beam at equal intervals to secure uniform tension and that inweaving several of these threads are brought together by the patternforming devices to form each cordrunning through the fabric, the unsizedthreads, after leaving the beam, cross over numbers of the single plythreadsin uniting to form a cord. p

This method of letting off the warp threads has proved'objectionable andimpractical as the fibers projecting from the unsized thread warp aroundand entangle with the sized threads in rubbing against them'and as aresult the breakages, asthe threads pass into the pattern formingdevices, are excessive and the operation of the loom renderedunprofitable.

A second method' has been to wind the sized andunsized threads onseparate beamsever, inasmuch as the weaver is greatly hindered by thepresence of the additional beam, which renders difficult the tying up ofbroken ends,"the cloth produced is often uneven because of the tensionon the unsized yarn being too great, and considerable waste is causedbecause of the practicable impossibility of getting both beams to runempty at the same time. The necessity of having two' beams and supportsalso renders this method more expensive than the single beam method.

This invention contemplates using a method which has the advantages ofboth of the above described methods and the disadvantages of neither.The preferred form of the apparatus used shown in the ac-Y companyingdrawings in which,

Figure 1 is a side view of a loom embody 10 in the drawings and the warpbeam by 11, the usual brackets supporting the beam onthe frame. Thesized single ply warp threads 12 are shown being drawn from the beam andpassing over a guide or whip roll 13 and then downwardly into the dropwires 14' of the stop motion devices which are adapted tostop the loomin the case of breakage of a warp thread. The unsiz'ed two-ply ,cords 15pass from the beam over the auxiliary guide loarfllti v and thence intofrom thefbea'm, separatinglthe two kinds the drop 'wires14i.v As shownin Fig, 1, the sized and the unsized threads are separated as they leavethe beam and onl ffcome together again as they enter the drop wires,

' after which they have little or no tendency to become entangled. romthe drop Wires the warp passes to theharnes's mechanism, indicated byl7, in the drawings, where the weaving is done.

The whip rolls or guides 13 and 16 are mounted upon brackets 18 and 119, respec;

.tively, secured to a rocking member 20 which comprises a portion of adevice for compensatlng unevennessm the tension of the .warp, whlch,however forms no part of this invention. The whip rolls or guides.

might be secured to the loom in other ways, provided they occupypositions which cause the warp threads to separate in the desiredmanner. i I I Another feature of invention is to provide the guide 16with a plurality of staggered holes 2], in the top adapted to receivethe tightffitti-n g stem portions of slotted members 22. .The slots inthe rnexnhere 22 are sufficiently wide to permit the passage of a threadbut will catch all, large knots and lumps and break the threads causingt a er motio e ces t rop a d" stop the machine. The slotted members alsoassist in forming the patterns by. properly grouping thcords 7 From---the foregoing description it will be obvious; that-thedisadvantages present in the methods of letting ofi' hithertoemployed in cord fabric looms have been avoided and that the improvedmethod disclosed-is more simple, inexpensive andefiicient, H I

Having thus described the invention, what is claimed and desired tobesecured by Letters Patent is:

1. The-method of we vi g abides of a I, single thickness havingpatterns-therein formed by arranging and groupin'gdifier ent kinds ofwarp threads, which consists in winding substantially equal lengths ofeach kind of warp threadupon a single beam,,drawing the threadssimultaneously as they leave the beam 'and maintaining them separateduntil they are groupedto form the pattern.

2. The anta of weavinglfabri cs having unsi'z ed threads upon asinglebeam, drawinglthe threads simultaneously from beam, separating thedifierent kinds as they leave the beamand maintainihg them sepafl rateduntil 'they are grouped to form the pattern. p

3. Ihe method of weaving fabrics having patterns therein forme'darr'an'ging ahd grouping. warp threads. organ least two diiE fe'rentplies the; threads having the lesser plies bein sized, which consists inwinding substantia V y equal length s;c f the sized and ee th e r ro agleb am ing the threfds simultaneously "fro'ih the", beain, separating-fthe difieren'tlkinds astray leave the beamandmaintaini'ng'thenifseparated until they are 'groupedjto formthe pattern.o; I i testimony whereof I do aflix .mytei nature.. I

7 Copies of thi s patilt may be obtained "for five cents ea'ch, byaddressing the Commissioner of faiteiits,

Washington, 0.

